Patents by Inventor John E. Chaya

John E. Chaya has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Polyurethane foam and method for its manufacture
    Patent number: 4021379
    Abstract: The resiliency and permeability of flexible polyurethane foams prepared from polyether polyols are improved by including a minor proportion of a polyester polyol in the reaction mixture.
    Type: Grant
    Filed: May 19, 1975
    Date of Patent: May 3, 1977
    Assignee: Tenneco Chemicals, Inc.
    Inventors: John E. Chaya, Charles Bredbenner, Elmer Minnich, Francis Branz